Final answer:
The cost per ounce of a 30-ounce jar of mayonnaise that costs $3.98 is approximately $0.133, calculated by dividing the total cost by the number of ounces.
Step-by-step explanation:
The cost per ounce of a 30-ounce jar of mayonnaise costing $3.98 can be determined by dividing the total cost by the number of ounces. This involves a simple division operation: Cost per ounce = Total cost ÷ Number of ounces. So, the cost per ounce is $3.98 ÷ 30 ounces, which equals approximately $0.133 per ounce. The cost per ounce of mayonnaise is approximately $0.133. The calculation needed to find the cost per ounce involves dividing the total cost of the jar by the total number of ounces contained in the jar. For a 30-ounce jar of mayonnaise costing $3.98, one would perform the division $3.98 ÷ 30, which yields a resulting price of about $0.133 per ounce.
When solving problems involving the cost of a product per unit of measure, you are essentially determining how much the product costs for each single unit. In this case, we're looking to ascertain the cost per ounce of a jar of mayonnaise. The given information is that a 30-ounce jar costs $3.98 in total. To find the cost per ounce, we divide the total cost by the quantity of ounces, which is a straightforward division operation. Performing this calculation, $3.98 divided by 30, results in approximately $0.133.